30 DR T. J. JEHU ON 



tend to become smaller and less angular. The material forming the upper part of the 

 cliff at this place is very similar to the Upper Boulder Clay which is seen at other parts 

 of the coast. 



Between the pier and the village the cliff is over 100 feet in height and shows steep 

 faces. It appears to be made up almost entirely of the Lower Boulder Clay, which 

 shows the usual characteristics and in which shell-fragments are common. The face of 

 the cliff is furrowed by running water, and at the top the weathering gives rise to 

 pinnacles. Traces of lamination are seen here and there, and masses of fine yellowish 

 marine-like sands occur as inclusions in the otherwise stiff homogeneous clay. 

 One of these irregular masses of sand reminds one of the great inclusion of chalk seen 

 in the cliff sections of the Boulder Clay in the neighbourhood of Cromer. Gravelly 

 patches also occur but are less common. 



To the north-east of the village the cliffs show deposits of a more varied character, 

 but a careful examination has led the writer to conclude that the whole belongs to the 

 horizon of the Lower Boulder Clay. The greater part of the cliff, which attains heights 

 of about 100 feet, consists of the typical Lower Boulder Clay. This invariably forms 

 the higher portion of the cliff, and weathers into pinnacles with steep sides. Lower 

 down and towards the bottom of the cliff the deposit becomes more of a boulder gravel 

 or gravel and sand. Midway between the village and the eastern end of the bay the 

 section is as follows : — 



5. Stiff greyish-blue Boulder Clay, comparatively stoneless, and containing shell- 

 fragments — 40 to 50 feet. 



4. Boulder Gravel — 10 feet. 



3. Dark band of stiff clay — 2 feet. 



2. A talus slope probably covering sand and fine gravel — 10 feet. 



1. Stiff grey Boulder Clay — 2 feet. The bottom of this is not reached in the 

 section. 



From a little distance the boulder gravels and sands can be traced as beds running 

 across the face of the cliff. The gravel beds appear to form gentle undulations as 

 shown in the diagram (fig. 3). Further east slipping has taken place, due to the 

 presence of sand in the clay, and there is a tendency to form an under-cliff. At the 

 extreme east end there is a fine example of " Head," lying between the Boulder Clay 

 and the solid rock. The " Head " consists of angular and flaky fragments showing rude 

 bedding, and these fragments are derived from the neighbouring rocks. The section at 

 this place is shown diagrammatically in the following figure (fig. 4) : — 



A cave has been excavated in the rubbly material by the waves. The Boulder Clay 

 overlying the " Head " contains pockets of boulder gravel. 



Imbedded in the beach at this end of the bay just under the rock cliff is a big 

 boulder measuring 66 inches by 24 inches. It is a granite with large idiomorphic 

 reddish felspars and closely resembles Shap granite. The felspar is orthoclase ; one 



